Bobbin-case for sewing-machine shuttles



No. 6I9,79 l PatentedFe-b. 2l, |899.

0. H.RUDOL PH. BOBBIN CASE FORSEWING MACHINE SHUTTLES.

(Application led Apr. 11, 1898.)

(No Model.)

1H: Nomus Evans su, Puma-umn, wAsNmnmN. u. c

UNITED STATES PATENT OFFICE.

OTTO HENRY RUDOLPH, OF NASHVILLE, TENNESSEE, ASSIGNOR TO THE SINGERMANUFACTURING COMPANY, OF NEW JERSEY.

BOBBlN-CASE FOR SEWING-MACHINE SHUTTLES.

SPECIFICATION forming part of Letters Patent No. 619,791, dated February21, 1899. Application filed April 11. 1898. Serial No. 677,172. (Nomodel.)

.To @ZZ whom t may concern,.-

Beit known that I, OTTO HENRY RUDOLPH, a citizen of the United States,residing at Nashville, in the county of Davidson and State ofTennessee,have invented certain new and useful Improvements inBobbin-Cases for Sewing-Machine Shuttles, of which the following is aspecification, reference being had therein to the accompanying drawings.

This invention has for its object to provide a bobbin-case forsewing-machine shuttles with abobbin-retaining device which will preventthe bobbin from accidentally falling out of the bobbin case or holderwhen the same is being handled by the attendant in being inserted in orremovedfrom the sewing-machine. To this end the bobbin case or holder,is provided with a movable device or hook which is normally out ofcontact with the bobbin, so that the latter may rotate freely as itsthread is unwound, but which is adapted to be forced into engagementwiththe bobbin when the bobbin case orholder is to be removed from themachine, so that the bobbin will be retained within the case at suchtimes during the handling of the bobbin-case by the attendant as may bedesirable.

In the accompanying drawings, Figure lis an elevation of one form ofbobbin-case embodying the invention. Figs. 2 and 3 are sectional viewsof the samev on line 2 3 of Fig. 1, Fig. 2 showing the bobbin-retainingdevice disengaged from the bobbin, while Fig. 3 shows thebobbin-retainin g device in position to hold the bobbin in thebobbin-case. Figs. 4, 5, 6, and 7 illustrate slight modilications of theinvention.

In the drawings, A denotes a bobbin-case adapted for the reception of adisk bobbin h. The bobbin-case is preferably provided with aspring-pressed slide c, such as is shown in United States patent toDiehl and Brandt, No. 435,924, dated September 9,1890, or to Brandt, No.557,547, dated April 7, 1896, and which slide when in its normalposition engages a pin on the shuttle, and thus serves to retain thebobbin-case within the shuttle, as fully shown and described in saidpatents.

In the form of the invention shown in Figs. 1, 2, and 3 the slide c has{pivoted to it a latch or finger-lever d, which has adjacent to .engagea `fixed portion of the bobbin-case when the said latch or finger-'leveris lifted or swung outward, said toe-piece or cam thereby forcing theslide backward against the stress of its spring g to permit the largerpart of the hole or opening e, with which the lsaid slide is provided,to be brought into register with the shuttle-pin, and thereby disengagethe said slide from said pin, so that the bobbin-case may be removedfrom the shuttle. The slide o is movable transversely to the axis of thebobbin and is provided with a bobbin-retaining device movable with saidslide and consisting, preferably, of a hook or projection o', which isnormally out of contact with the bobbin, but which when the latch orfingerlever d is lifted or swung outward and the slide is thereby movedto disengage it from the shuttle-pin will be forced inward, so as toengage one of the flanges of the bobbin b, and thereby retain the saidbobbin within the bobbin-case so long as the said finger-lever d is inits raised or outwardly-swung position. This finger-lever cl is intendedto serve as a convenient handle in inserting the bobbinease into theshuttle when the latter is in the machine or in removing it therefrom,and so long as said latch or finger-lever remains lifted or swungoutward, as shown in Fig. 3, vin being utilized as a handle for thebobbin, it is obvious that the bobbin will be retained in said case bythe hook or projection c.

In the form of the invention shown in Figs.

'4 and 5 the slide c, which carries the bobbinholding projection or hookc', is constructed to be forced back against the stress of itscooperating spring simply by the pressure of the thumb or finger nail ofthe attendant, while in the form of the invention shown in Figs. 6 and 7the movable device c2, carrying IOO swinging device, which also servesto retain the bobbin-case in the shuttle, it will be undei-stood that itis not necessarily thus applied, but might be used in connection withother forms of bobbin-cases or bobbin-holders than those herein shown.It Will therefore he understood that the invention is not necessarilylimited to the details of construction herein illustrated and described.

Having thus described my invention, I claim and desire to secure byLetters Patentl. The combination with a bobbin case or holder, of aspring-pressed device which is movable transversely to the axis of thebobbin and which, when in its normal position, is located to be out ofcontact with the bobbin, said spring-pressed device being provided Witha bobbin-retaining device to be forced into engagement With a flange ofa bohhin when the said movable device is displaced from its normalposition.

2. The combination with a sewing-machine bobbin case or holder providedwith a latch or linger-lever to serve as a handle, of a springpresseddevice movable transversely to the axis of the bobbin and connected withthe said latch or finger-lever, said spring-pressed device beingprovided with a bobbin-retaining device which is so placed as to beforced into engagement with a bobbin when the said latch or finger-lever is in a lifted or outwardlyswung position.

3. The combination with the bobbin-case A provided with a locking-slidee having a bobbin-retaining hook or projection c', the latch orfinger-lever d hinged o1' pivoted to the said slide and provided with acam or projection serving to move said slide when the said latch orfinger-lever is lifted or swung outward, and a spring which serves tohold the said slide in its normal or locking position, and which springis compressed when the said latch or nger-lever is lifted or swungoutward.

In testimony whereof I aflix my signature in the presence of twowitnesses.

OTTO HENRY RUDOLPH.

W itnesscs:

W. F. FORD, F. M. REDDING.

